I highly recommend Charles Wood's book, Rey. http://users.adelphia.net/~ronbee/Moon/index.html I also think every lunartics ;-) must have the Rukl atlas and don't forget about the very powerful but free Virtual Moon Atlas software.
Starting out, get the Virtual Moon Atlas for your computer. It's FREE, just a big file(about 600mb) but it can't be beat with the current phase and tons of info. Next, Rukl's moon atlas and Charles Wood's Modern Moon gives you great resources for observing(Rukl's) and in-depth info about the geology(Modern Moon) of easily observable formations. For more about observing and imaging, go to the Yahoo Lunar Oberving site. These will keep you busy for a long time!